forked from old/legacy-imlib2
206 lines
5.4 KiB
Plaintext
206 lines
5.4 KiB
Plaintext
dnl Process this file with autoconf to create configure.
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dnl Initialize the libltdl package.
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AC_INIT(ltdl.c)
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if test -z "$enable_ltdl_install$enable_ltdl_convenience"; then
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if test -f ${srcdir}/ltconfig && test -f ${srcdir}/ltmain.sh; then
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# if libltdl is libtoolized, it is assumed to be stand-alone and
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# installed unless the command line overrides it (tested above)
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enable_ltdl_install=yes
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else
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AC_MSG_WARN([*** The top-level configure must select either])
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AC_MSG_WARN([*** [A""C_LIBLTDL_INSTALLABLE] or [A""C_LIBLTDL_CONVENIENCE].])
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AC_MSG_ERROR([*** Maybe you want to --enable-ltdl-install?])
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fi
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fi
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AM_INIT_AUTOMAKE(libltdl,1.0,-)
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AM_CONFIG_HEADER(config.h)
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AM_MAINTAINER_MODE
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AC_PROG_CC
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AC_C_CONST
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AC_C_INLINE
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AM_PROG_LIBTOOL
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AC_SUBST(LIBTOOL_DEPS)
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AC_ARG_ENABLE(ltdl-install,
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[ --enable-ltdl-install install libltdl])
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AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno)
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AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)
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AC_CACHE_CHECK([which extension is used for shared libraries],
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libltdl_cv_shlibext, [dnl
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(
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rm -f conftest
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./libtool --config > conftest
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. ./conftest
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last=
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for spec in $library_names_spec; do
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last="$spec"
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done
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rm -f conftest
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changequote(, )
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echo "$last" | sed 's/^[^.]*//;s/\$.*$//;s/\.$//' > conftest
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changequote([, ])
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)
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libltdl_cv_shlibext=`cat conftest`
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rm -f conftest
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])
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if test -n "$libltdl_cv_shlibext"; then
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AC_DEFINE_UNQUOTED(LTDL_SHLIB_EXT, "$libltdl_cv_shlibext",
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[Define to the extension used for shared libraries, say, ".so". ])
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fi
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AC_CACHE_CHECK([which variable specifies run-time library path],
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libltdl_cv_shlibpath_var, [dnl
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(
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rm -f conftest
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./libtool --config > conftest
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. ./conftest
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rm -f conftest
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echo "$shlibpath_var" > conftest
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)
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libltdl_cv_shlibpath_var=`cat conftest`
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rm -f conftest
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])
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if test -n "$libltdl_cv_shlibpath_var"; then
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AC_DEFINE_UNQUOTED(LTDL_SHLIBPATH_VAR, "$libltdl_cv_shlibpath_var",
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[Define to the name of the environment variable that determines the dynamic library search path. ])
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fi
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AC_CACHE_CHECK([for objdir],
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libltdl_cv_objdir, [dnl
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(
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rm -f conftest
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./libtool --config > conftest
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. ./conftest
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rm -f conftest
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echo "$objdir" > conftest
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)
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libltdl_cv_objdir=`cat conftest`
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rm -f conftest
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])
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test -z "$libltdl_cv_objdir" && libltdl_cv_objdir=".libs"
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AC_DEFINE_UNQUOTED(LTDL_OBJDIR, "$libltdl_cv_objdir/",
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[Define to the sub-directory in which libtool stores uninstalled libraries. ])
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AC_HEADER_STDC
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AC_CHECK_HEADERS(malloc.h memory.h stdlib.h stdio.h ctype.h dlfcn.h dl.h dld.h)
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AC_CHECK_HEADERS(string.h strings.h, break)
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AC_CHECK_FUNCS(strdup strchr strrchr index rindex)
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AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
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libltdl_cv_preloaded_symbols, [dnl
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(
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rm -f conftest
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./libtool --config > conftest
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. ./conftest
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rm -f conftest
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if test -n "$global_symbol_pipe"; then
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echo yes > conftest
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else
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echo no > conftest
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fi
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)
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libltdl_cv_preloaded_symbols=`cat conftest`
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rm -f conftest
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])
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if test x"$libltdl_cv_preloaded_symbols" = x"yes"; then
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AC_DEFINE(HAVE_PRELOADED_SYMBOLS, 1,
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[Define if libtool can extract symbol lists from object files. ])
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fi
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test_dlerror=no
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LIBADD_DL=
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AC_CHECK_FUNCS(dlopen, [AC_DEFINE(HAVE_LIBDL, 1,
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[Define if you have the libdl library or equivalent. ]) test_dlerror=yes],
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[AC_CHECK_LIB(dl, dlopen, [AC_DEFINE(HAVE_LIBDL, 1,
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[Define if you have the libdl library. ]) dnl
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LIBADD_DL="-ldl" test_dlerror=yes],
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[AC_CHECK_LIB(dld, dld_link, [AC_DEFINE(HAVE_DLD, 1,
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[Define if you have the GNU dld library. ]) dnl
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LIBADD_DL="-ldld"],
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[AC_CHECK_FUNCS(shl_load, [AC_DEFINE(HAVE_SHL_LOAD, 1,
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[Define if you have the shl_load function. ])])]
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)]
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)]
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)
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AC_SUBST(LIBADD_DL)
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if test "$test_dlerror" = yes; then
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LIBS_SAVE="$LIBS"
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LIBS="$LIBS $LIBADD_DL"
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AC_CHECK_FUNCS(dlerror)
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LIBS="$LIBS_SAVE"
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fi
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AC_SYS_SYMBOL_UNDERSCORE
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if test x"$USE_SYMBOL_UNDERSCORE" = xyes; then
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if test x"$ac_cv_func_dlopen" = xyes ||
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test x"$ac_cv_lib_dl_dlopen" = xyes ; then
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AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
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libltdl_cv_need_uscore, [dnl
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AC_TRY_RUN([
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#if HAVE_DLFCN_H
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#include <dlfcn.h>
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#endif
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#include <stdio.h>
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#ifdef RTLD_GLOBAL
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# define LTDL_GLOBAL RTLD_GLOBAL
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#else
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# ifdef DL_GLOBAL
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# define LTDL_GLOBAL DL_GLOBAL
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# else
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# define LTDL_GLOBAL 0
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# endif
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#endif
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/* We may have to define LTDL_LAZY_OR_NOW in the command line if we
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find out it does not work in some platform. */
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#ifndef LTDL_LAZY_OR_NOW
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# ifdef RTLD_LAZY
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# define LTDL_LAZY_OR_NOW RTLD_LAZY
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# else
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# ifdef DL_LAZY
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# define LTDL_LAZY_OR_NOW DL_LAZY
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# else
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# ifdef RTLD_NOW
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# define LTDL_LAZY_OR_NOW RTLD_NOW
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# else
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# ifdef DL_NOW
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# define LTDL_LAZY_OR_NOW DL_NOW
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# else
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# define LTDL_LAZY_OR_NOW 0
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# endif
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# endif
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# endif
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# endif
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#endif
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fnord() { int i=42;}
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main() { void *self, *ptr1, *ptr2; self=dlopen(0,LTDL_GLOBAL|LTDL_LAZY_OR_NOW);
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if(self) { ptr1=dlsym(self,"fnord"); ptr2=dlsym(self,"_fnord");
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if(ptr1 && !ptr2) exit(0); } exit(1); }
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], libltdl_cv_need_uscore=no, libltdl_cv_need_uscore=yes,
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libltdl_cv_need_uscore=cross
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)])
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fi
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fi
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if test x"$libltdl_cv_need_uscore" = xyes; then
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AC_DEFINE(NEED_USCORE, 1,
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[Define if dlsym() requires a leading underscode in symbol names. ])
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fi
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dnl Output the makefile
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AC_OUTPUT(Makefile)
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# Local Variables:
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# mode:shell-script
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# sh-indentation:2
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# End:
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